The electric motor and the transmission of power (1906)
Houston, Edwin J. (Edwin James), 1847-1914, Kennelly, Arthur E. (Arthur Edwin), 1861-1939, joint author · New York : McGraw Pub. Co. · leaf 210
t-wound motor shown in Fig. 26, itwill be seen that the armature is connecteddirectly across the mains. If we assumethat this connection is made wdth thearmature at rest, and after the field circuithas been closed, so as to excite the fieldand produce the magnetic flux throughthe armature; then,… … Fig. 53.—Starting Rheostat. tion. This first inrush of current andviolent resulting torque, are apt to beinjurious to the motor. When, therefore,a shunt-wound motor is started from rest,it is necessary to insert a resistance in the THE TRANSMISSIO]N OF POWER. 203 armature circuit, so as to limit…
Electric motors
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